人工壓電氣結晶の育成について(第 3 報)

概要

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There are some factors which will be influenced to grow a crystal, these are temperature, vapour pressure, super saturation of solution, amount of resin and stimulation of crystallization. This paper gives the microphotographs of Ethylene Diamine Tartrate (EDT) crystals which are growing in these conditions. From the observation of microphotographs, I conclude as follows, for the EDT crystal growth, find the different habits between the repose and stimulate crystallizations, the crystal takes form of a radial crystal in the former case, in the other hand, it takes form of a native EDT crystal in the latter, these crystal habits are analogous to DKT crystal growth. But for the EDT crystal growth, the solution oxidizes from it's surface and deposits the oxygen compound which is named a resin, the resin formation deforms the crystallization as shown in the microphotographs. In the case of no or a little resin content, the rate of advance of a growth is proportionate to the temperature, but a plenty of resin formation prevent a crystal growing.
山梨大学の論文
1957-07-10